js-since

js-since.js

function getPastRoundedHours() {

  const formattedDate = (date) => {
    const year = date.getFullYear();
    const month = String(date.getMonth() + 1).padStart(2, '0');
    const day = String(date.getDate()).padStart(2, '0');
    const hours = String(date.getHours()).padStart(2, '0');
    return `${year}-${month}-${day} ${hours}:00:00`;
  }
  const now = new Date();
  now.setMinutes(0, 0, 0);
  const previousHour1 = new Date(now);
  const previousHour2 = (new Date(previousHour1));
  previousHour2.setHours(previousHour2.getHours() - 1);
  return `SINCE ${formattedDate(previousHour2)} UNTIL ${formattedDate(previousHour1)}`;

}


console.log( getPastRoundedHours());